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Free instals Undergrave1/11/2024 ![]() If you have one of the later GM round pattern cases, you have two options. ![]() ![]() We elected to build our GM/Dodge version Magnum underdrive only for the figure 8 pattern. GM NP205's came with either the figure 8 or hourglass pattern (1984 and older) or the six bolt circle pattern (1985-1991). Only 1.625" longerīelow are some pictures of our divorced magnum setupīelow are some pictures of how to route the sight tube To illustrate how compact the Magnum 205 is here is it next to a Slip yoke eliminated NP241. When purchased with one of our remanufactured NP205s we will install the Magnum for FREE! NP205s can be found HERE Our giant, US made chromoly intermediate shaft is more than double the strength of a conventional 32 spline connection so it's safe to run in any gear combination. When that shaft breaks, you're dead in the water until you fix it! Until now, all of the planetary underdrive systems use a 32 spline intermediate shaft (or smaller) which is the weak link in the system when using 32 spline outputs. On the bottom is a conventional planetary intermediate shaft, notice it necks down to 32 spline. Our "Fat Shaft" (Below), notice that it doesn't ever get smaller than the large planetary output diameter and the shaft is integrated into the input gear. This is the heart of the system and the picture below compares it to the intermediate shaft of all other planetary gearing systems. This transforms the NP205 from a strong transfer case with poor low range gearing to an extremely strong transfer case with four range options giving you all the low range you could ever want.īolts directly to GM/Dodge fig 8 205, GM round pattern 205 or Ford 205 with no additional adapters. The Magnum Box is a planetary gear reduction box that bolts to the front of an NP205 transfer case.
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